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Finding the Fourth Proportional to 124,676.40, 187,475.40 and 104,401.20

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Solution

The fourth proportional to 124,676.40, 187,475.40 and 104,401.20 is: 156,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,676.40 : 187,475.40 = 104,401.20 : x
  2. Step 2: Convert to fraction form
    124,676.40/187,475.40 = 104,401.20/x
  3. Step 3: Cross multiply
    124,676.40x = 187,475.40 × 104,401.20
  4. Step 4: Simplify right side
    124,676.40x = 19,572,656,730.48
  5. Step 5: Solve for x
    x = 19,572,656,730.48/124,676.40
  6. Step 6: Final answer
    x = 156,987.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.